Results 31 to 40 of about 12,561 (167)
浙江大学学报. 农业与生命科学版Lipaphis pseudobrassicae (Davis, 1914) is an important agricultural insect pest. In this study, we sequenced and analyzed the entire mitochondrial genome of L.
LIN Xingyu(林兴雨), SONG Nan(宋南)
doaj +1 more source
Genetic diversity of Noctiluca scintillans [PDF]
, 2016 夜光藻是一种常见的赤潮藻，在世界大部分近海海域均有分布。目前普遍认为夜光藻只有一个种，但还没有研究探索不同地理种群的夜光藻是否产生了种内变异。本研究通过单细胞PCR以及单细胞克隆文库的方法，比较了中国黄海、东海、南海，墨西哥湾以及阿拉伯海5个海域夜光藻核糖体基因的遗传多样性。主要研究结果如下： 1、发现22种ITS单倍型(n=103)，12种28S单倍型(n=25)，6种18S单倍型(n=31)；这3个基因的单倍型多样度(Hd)分别为0.824、0.670、0.557，核苷酸多样度(π)分别为0 ...
潘永柏
core
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Laser powder bed fusion (LPBF) can fabricate high‐entropy alloys (HEAs) with refined microstructure and enhanced mechanical properties. However, the deformation and fatigue mechanisms of Al‐containing HEAs produced by LPBF remain unclear. In this work, we systematically investigate the tensile properties, deformation mechanisms, and high‐cycle
Dan Zheng +4 more
wiley +1 more source
Journal of Linguistic Anthropology, Volume 36, Issue 1, May 2026.Abstract Native speakerism in English language teaching (ELT) has become associated with Whiteness. However, how this association is sustained in everyday practices within China's unique socio‐cultural‐political context remains underexplored. This study examines the raciolinguistic construct of Mubai, a central recruitment criterion in China's ELT ...
Shuling Wang, Raviv Litman
wiley +1 more source
, 2007 通过线粒体Cytb基因全序列分析,探讨了青海湖裸鲤和花斑裸鲤的起源关系及其进化模式.系统发育分析进一步支持了青海湖裸鲤和花斑裸鲤3个mtDNA谱系的划分.形态上具有高鳃耙变异的个体未形成特有的进化枝,证明了第一鳃弓外鳃耙变异并不具有系统发育意义.对青海湖裸鲤和花斑裸鲤进化枝扩散模式的网络分析表明,黄河独有的单倍型A1是一个创立者单倍型,全部青海湖裸鲤的样品来自于它的辐射,而青海湖裸鲤可能仅仅起源于黄河花斑裸鲤两个主要支系中的一个 ...
何舜平 +5 more
core
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin +9 more
wiley +1 more source
依据ITS rDNA序列探讨我国盾腹虫属种类的系统发育关系(英文) [PDF]
, 2010 盾腹吸虫为寄生扁形动物中一小的类群。我国已报道7种盾腹吸虫,其中5种隶属于盾腹虫属(Aspidogastridae,Aspidogastrinae)。研究测定了在我国采集到的4种盾腹虫属吸虫的核糖体DNA转录内间隔区(ITSrDNA)序列,并分别采用邻接法和最大似然法构建分子系统发育树。结果显示,这4种盾腹吸虫的ITS-1和ITS-2序列的长度分别在728—877bp和518—645bp之间,其G+C含量分别在50.1%—52.3%和49.2%—52.2%范围内。4种盾腹吸虫的种间遗传距离在0.2 ...
孙军 +4 more
core
Diversity of culturable endophytic fungi of common reed ( Phragmites australis) in coastal wetland [PDF]
, 2016 内生真菌在植物生长以及抵御环境胁迫过程中起着非常重要的生态作用.本研究从黄河三角洲滨海湿地1350个芦苇组织切片中分离得到318株内生真菌,通过对rDNA ITS的分型、测序及系统进化分析,研究了该地区芦苇植株根、茎、叶中可培养内生真菌的种类组成及在不同盐度、不同组织中的分布情况.根据序列相似性(以98%为阈值),共获得12个真菌分类操作单元(OTUs).在门级分类水平上,子囊菌门为绝对优势菌群,在各组织和站位中均有分布.芦苇根组织中分离得到的内生真菌OTU数相对较多 ...
张倩倩 +6 more
core +1 more source
Hobbyist preferences for pet freshwater turtles
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao +7 more
wiley +1 more source
Impacts and mechanisms of Slit2 on the proliferation, invasion and metastasis of Hepatocellular Carcinoma Cells [PDF]
, 2016 不同神经导向分子之间的相互协调作用是神经系统发育过程中的普遍特性，这种协调作用保证了神经轴突按照指定路径生长到达其靶细胞。Slit2/Robo1和Netrin1/DCC在神经系统的发育过程中发挥了重要作用，Slit2/Robo1对背神经轴突的迁移起到排斥的作用，而Netrin1/DCC则对背神经轴突的迁移起到吸引的作用，二者相互协调确保了神经轴突的正确定位。许多神经导向因子在神经系统外也发挥重要作用，其中以参与对血管与淋巴管系统发育的调节和影响肿瘤的发展与转移方面最为引人注目 ...
王晶晶
core